问题描述
滑块从 -10 变为 +10。从 -10 到 0，颜色应该是红色。从 0 到 +10，颜色应该是绿色。
如何使用 <Slider /> 中的 @material-ui/core 实现此目的？
解决方法
我不确定您指的是 info [sysup] ea4: repo already installed
checkyum version 22.3 (excludes: bind-chroot kernel ruby)
checkyum version 22.3 (excludes: bind-chroot kernel)
info [sysup] Starting yum execution “--assumeyes --color=never --config /etc/yum.conf install ImageMagick-devel --enablerepo=powertools --enablerepo=epel”.
Last metadata expiration check: 2:19:16 ago on Fri Jul 9 14:54:34 2021.
Dependencies resolved.
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Package Arch Version Repo Size
================================================================================
Installing:
ImageMagick-devel x86_64 1:6.9.11.60-1.el8.remi remi 136 k
Installing dependencies:
ImageMagick x86_64 1:6.9.11.60-1.el8.remi remi 103 k
ImageMagick-libs x86_64 1:6.9.11.60-1.el8.remi remi 2.4 M
Transaction Summary
================================================================================
Install 3 Packages
Total size: 2.7 M
Installed size: 8.8 M
Downloading Packages:
[SKIPPED] ImageMagick-6.9.11.60-1.el8.remi.x86_64.rpm: Already downloaded
[SKIPPED] ImageMagick-devel-6.9.11.60-1.el8.remi.x86_64.rpm: Already downloaded
[SKIPPED] ImageMagick-libs-6.9.11.60-1.el8.remi.x86_64.rpm: Already downloaded
Running transaction check
Transaction check succeeded.
Running transaction test
The downloaded packages were saved in cache until the next successful transaction.
You can remove cached packages by executing 'yum clean packages'.
Error: Transaction test error:
file /usr/bin/animate from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/bin/compare from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/bin/composite from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/bin/conjure from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/bin/convert from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/bin/display from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/bin/identify from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/bin/import from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/bin/mogrify from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/bin/montage from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/bin/stream from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/share/man/man1/ImageMagick.1.gz from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/share/man/man1/animate.1.gz from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/share/man/man1/compare.1.gz from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/share/man/man1/composite.1.gz from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/share/man/man1/conjure.1.gz from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/share/man/man1/convert.1.gz from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/share/man/man1/display.1.gz from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/share/man/man1/identify.1.gz from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/share/man/man1/import.1.gz from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/share/man/man1/mogrify.1.gz from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/share/man/man1/montage.1.gz from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/share/man/man1/stream.1.gz from install of ImageMagick-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-7.1.0.2-1.el8.remi.x86_64
file /usr/bin/MagickCore-config from install of ImageMagick-devel-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-devel-7.1.0.2-1.el8.remi.x86_64
file /usr/bin/MagickWand-config from install of ImageMagick-devel-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-devel-7.1.0.2-1.el8.remi.x86_64
file /usr/lib64/pkgconfig/ImageMagick.pc from install of ImageMagick-devel-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-devel-7.1.0.2-1.el8.remi.x86_64
file /usr/lib64/pkgconfig/MagickCore.pc from install of ImageMagick-devel-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-devel-7.1.0.2-1.el8.remi.x86_64
file /usr/lib64/pkgconfig/MagickWand.pc from install of ImageMagick-devel-1:6.9.11.60-1.el8.remi.x86_64 conflicts with file from package ImageMagick7-devel-7.1.0.2-1.el8.remi.x86_64
info [sysup] Completed yum execution “--assumeyes --color=never --config /etc/yum.conf install ImageMagick-devel --enablerepo=powertools --enablerepo=epel”: in 4.886 second(s).
(XID 7t4cua) “/usr/local/cpanel/scripts/retry_rpm” reported error code “1” when it ended:
checkyum version 22.3 (excludes: bind-chroot ruby)
E Sysup: Needed system RPMs were not installed: ImageMagick-devel
的 rail 元素还是 track 元素 - 本示例对两者都设置了样式。从本质上讲，这只是针对 Material-UI API 向您公开的正确类的一种情况。您可以获得 Slider 元素的类 here 的完整列表。
轨道的背景可以使用 CSS 生成的简单线性渐变图像进行样式设置，并且轨道本身可以通过将 prop 传递给 Slider 函数来有条件地设置样式：
makeStyles从表面上看您的评论，您还可以将 import React from "react";
import Slider from "@material-ui/core/Slider";
import { makeStyles } from "@material-ui/core/styles";
const useStyles = makeStyles({
rail: {
background: "linear-gradient(90deg,red 50%,green 50%)"
},track: {
background: ({ value }) => (value >= 0 ? "green" : "red")
}
});
const marks = Array.from({ length: 21 },(_,i) => ({
value: i - 10,label: i - 10
}));
const App = () => {
const [value,setValue] = React.useState(0);
const classes = useStyles({ value });
return (
<Slider
onChange={(e,newValue) => setValue(newValue)}
max={10}
min={-10}
value={value}
classes={classes}
marks={marks}
step={1}
/>
);
};
export default App;
道具传递给栏杆并有条件地设置样式。您永远不需要将轨道左侧的样式设置为灰色，因为在这种情况下它始终会被轨道上方覆盖：
value否则，我会完全摆脱 rail: {
background: ({ value }) =>
`linear-gradient(90deg,${value < 0 ? "gray" : "green"} 50%)`
}, 元素并提高栏杆的不透明度，同时通过两个条件考虑两个不同的边：
track